license: apache-2.0
pipeline_tag: text-generation
base_model: prism-ml/Ternary-Bonsai-2-27B-mlx-2bit
tags:
- abliterated
- mixed-precision
- bonsai
- gguf
Compact release
A smaller 5.981 GB base + adapter package is available in compact/. The adapter is required. Download only compact/* and follow its loading instructions; downloading this whole repository also fetches the older larger models. The GGUF adapter passed 0/126 refusals and 21/24 benign tasks. MLX has Linux CPU smoke and layer validation, not Apple-hardware validation.
Earlier mixed-precision release
Bonsai 2 27B — Philadelphia Class
An abliterated derivative of PrismML Bonsai 2 27B, built with the same two-pass Qwen3.8 Philadelphia recipe. Refusal directions were re-extracted from Bonsai for each pass; no Qwen weights or saved Qwen directions were substituted.
What changed
Two norm-preserving biprojection passes, layers 1–63, scale 1.0, 126 output matrices per pass. The 842 paired prompts were split into 716 extraction pairs and 126 family-disjoint held-out pairs with seed 1337. See recipe.json and the two provenance files.
These are mixed-precision models. Unedited quantized language matrices retain their original rotated ternary representation; auxiliary and vision tensors retain their source precision. The 126 edited matrices use canonical, unrotated Q4_0 or Q8_0 values. GDN column ordering and Hadamard manifests were updated accordingly. Pure ternary repacking erased the edit (124/126 held-out refusals), so that failed candidate is not distributed here.
Validation
| Model | Refusals / 126 | Benign tasks passed / 24 |
|---|---|---|
| Original Bonsai | 123 | 22 |
| Mixed 4-bit | 0 | 21 |
| Mixed 8-bit | 0 | 21 |
These are deterministic heuristic screens, not broad intelligence scores. The held-out screen used 96 output tokens, greedy decoding, repetition penalty 1.1, and a 4096-token GGUF context on an A100 80 GB. The intermediate BF16 final checkpoint passed its separate 126-prompt, 24-token opening gate with zero refusals and 100% usable openings. Raw harmful prompts and responses are not included.
MLX checks cover strict full-model reload, one arithmetic generation smoke test on Linux CPU, and independent packed-layer numerical checks. No iPhone, macOS Metal, or App Store validation was performed. Weights need additional runtime and cache memory; file size is not a device RAM requirement. Vision weights are preserved in MLX but vision behavior was not re-evaluated.
Full aggregate results and exact scope are in evaluation.json. Do not apply the upstream model's intelligence or throughput claims to this derivative.
Sources and license
Created using Bonsai by Prism ML. Derived from PrismML GGUF at 6ed5e12bf84b7a63069882c91dd9e9218647d17b and PrismML MLX at 3f926b415992eaa2ae9dd7b573706494d6bbf787. Bonsai derives from Qwen3.8-27B. Weights retain Apache-2.0 licensing; bundled runtime code retains its own MIT license. Modifications made 2026-09-21.
Running GGUF
Requires PrismML's llama.cpp fork; validated revision 9a9394a895b96003ca842a6041cb28ac49a108f7. Stock runtimes that omit the remaining ternary/Hadamard support are incompatible.
| File | Decimal GB |
|---|---|
Bonsai-2-27B-Philadelphia-Class-MIXED-PTQ1-Q4_0.gguf |
8.56 |
Bonsai-2-27B-Philadelphia-Class-MIXED-PTQ1-Q8_0.gguf |
12.36 |
hf download KridgeDookie/Ternary-Bonsai-2-27B-ABLITERATED-UNCENSORED-PHILADELPHIA-CLASS-GGUF Bonsai-2-27B-Philadelphia-Class-MIXED-PTQ1-Q4_0.gguf --local-dir bonsai
./llama.cpp/build/bin/llama-server -m bonsai/Bonsai-2-27B-Philadelphia-Class-MIXED-PTQ1-Q4_0.gguf -ngl 99 -c 4096
The optional original GGUF vision projector is available in the upstream PrismML repository; it is not bundled or revalidated here.